Odds Calculator
Convert between decimal, fractional, American odds and implied probability. Enter odds in any format to see all conversions instantly.
Odds Converter
Enter odds in any format to convert to all others
Understanding Odds Formats
Decimal Odds
Common in Europe and Australia. Represents total return per unit staked (including stake).
Example: 2.50 = £2.50 return for every £1 bet
Fractional Odds (UK)
Traditional UK format. Shows profit relative to stake.
Example: 6/4 = £6 profit for every £4 staked
American Odds
Used in the US. Positive numbers show profit on $100; negative shows stake needed for $100 profit.
Example: +150 = $150 profit on $100 bet
Implied Probability
The probability implied by the odds, accounting for bookmaker margin.
Example: 2.00 decimal = 50% implied probability
Common Odds Conversions
| Decimal | Fractional | American | Implied % |
|---|---|---|---|
| 1.50 | 1/2 | -200 | 66.7% |
| 2.00 | 1/1 (Evens) | +100 | 50.0% |
| 2.50 | 6/4 | +150 | 40.0% |
| 3.00 | 2/1 | +200 | 33.3% |
| 5.00 | 4/1 | +400 | 20.0% |
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